“ For convenience and to secure the uninterrupted course of the work, an Executive Committee of not less than three members of the Commission shall be appointed by the Commission to act in place of the Commission during the intervals between the meetings of the Commission, and to report its doings in full to the Commission at the next regular meeting. ”

“ All officers and employes shall be appointed and their salaries shall be fixed by the head of the department in which they are engaged. Their appointment and salary shall be subject to the approval either of the Commission or, if the Commission is not in session, of the Executive Committee. The employment of laborers, where the contract of employment is made in the United States or outside of the Isthmus! shall be negotiated and concluded by the Chairman of the Commission, subject to the approval of the Executive Committee. ”

“ All matters of sanitation within the Canal Zone, and also in the cities of Panama and Colon and the harbors, etc., so far as authorized by the treaty, the Executive Orders and Decrees of December 3, 1904, between the United States and the Republic of Panama relating thereto. ”